[i82much]

Curious if anyone is using the AR-series plugs in a street application. I just replaced my RC12YC plugs in my edelbrock 87 cc heads with the regular 3924s. The old plugs were pretty heavily carboned up, although that is probably a tuning issue. Has an MSD box triggered by a R2R with a blaster 2 coil.

Do the AR series plugs produce more complete combustion, prevent plugs from loading up? How long do they last with the cut-back electrode? I guess i'm probably looking at a plug change every 10k miles anyway, is it worth giving the AR plug a shot?